Means for translating wave impulses.



i az'mmsmv E. H. AMET.

-MEANS FO RTRANSLAHNG WAVE IMPULS ES APPLICATION man FEB. 28. van.

lu tented Aug. ii,- 1918.

EDWARD H. AMET, OF REDONDO BEACH CALIFORNIA.

MEAN S FOR TRANSLATING WAVE IMPULSES.

Specification of Letters Patent.

Patented Aug. 6, 1918.

Application filed February 28, 1917. Serial No. 151,591}.

'2 '0 a whom it may concern.-

Be it known that I, EDWARD H. Amer, a citizen of the United States, residing at Redondo Beach, in the county of Los Angeles and State of California, have discovered and invented a new and useful Means for Translating Wave Impulses, of which the following is a specification.

This discovery and invention may be applied to various uses, but is more particularly designed for use in the transmission of sound wave impulses and will be herein described as applied to talking machines and telephones. I

An object of this discovery and invention is to translate wave impulses Without shock or jar andin the application of this invention to the translation of sound impulses an object is better articulation of reproduction impulses.

A principle of this invention is indicated by a discovery which I have made that a cause of imperfect reproduction of transmitted sound impulses arises from the interposition in' the translating means of one or more elements capable of directly intercepting the motion of the element or member that is set in motion by the impulses to be translated, and an object of this invention is to provide means whereby the impulses may be translated with minimum liability to such interception, and attaining this object I provide a translator comprising two memers that may be oscillated in the direction of the translating movement and I connect said members by resilient non-resonant means having operative contact with said members only along faces extending parallel to the line of direction of the impulse trans lation.

The invention may be carr ed out 1n many ways and I regard 1t as basic and pioneer in that the connection is such that relative movement of the two members is allowed and isunlimited within therequirements of the impulse translation to which the translator is applied, and yet the translated impulses are practically -dead beat. v

Cheapness, simplicity, durability and ready application to" impulse transmitters of common construction are other obj ects of the invention. 3 i I have discovered that by transmitting the impulses by direct propagation; indirect-now resonant propagation and direct propa 'ation practically without overvibration or interfermgresonance'so that by making a talkdiscovery and invention, and then reproducing the record in accordance with such discovery and invention the reproduction. is practically true to nature.

Other objects, advantages and features of novelty may appear from the accompanying drawings, the subjoined detail description and the appended claims.

The accompanying drawings illustrate variOllS forms of impulse translating apparatus exemplifying the principles of this discovcry and invention.

Figure 1 is a mid-sectional elevation of a translator embodying this invention and applied to talking machine-apparatus, fragments of which are shown.

Fig. 2 is a fragmental horizontal sectional plan detail on line m Fig. 1.

Fig. 3 is a fragmental section of the same type of translator as that shown in Figs.

" 1 and 2, taken at right angles to the section of Fig. 1; showing also fragments of telephone apparatus to which the translator is connected.

Fig. 4 is a fragmental sectional detail analogous to Fig. 3 showing parts of a different form of translator connected to a diaphra a fragment of which is shown. Line 00 Flg. 5, indicates the line of section.

Fig. 5 is a fragmental sectional detail on mg machine record in accordance with this ratus to illustrate more fully the translation and-propagation of impulses through the non resonant coupling at rightang'les to the impulses received by and transmitted from said coupling.

B f mg to Figs. 1 and 2' the translator comprises a resonant member 1, a second resonant member 2 and resilient non-resonant means 3 forming a coupler arranged between and connecting said members 1 and 2. The arrangement is such. that the nonresouant coupler 3 does not form a bumper.

In the form shown in Figs. 1-5 the member 1 is a U-shaped clip of sheetialuminum or other suitable resonant material extending within the member 2, which is also a U-shaped member of light sheet metal or other resonant material. In Figs. 1, 2 and 3 the non-resonant connecting means or coupler 3 is U-shaped and may be connected to or frictionally held between the members 1 and 2 and made of soft India rubber or its equivalent. It is inserted into the member 2; and the member 1 in turn is inserted into the space between, and is in contact with opposite faces of the U-shaped part 3; but the inner ends of the member 1 and the cou- -pler 3 are spaced apart so that the inner member 1 is suspended as it were by frictional contact along parallel traces t of the surface of coupler 3; that is to say, along the intersections of the planes of the coupler faces and planes normal to said faces and in parallelism with the direction of the ac-. tuating impulses, 6., impulses from the telephone diaphragm or the talking machine toward the variable electrical resistance.

The member2 is provided with a threaded orifice 41 into which is screwed the stud 5 of the variable electrical resistance (3 which may be of any acceptable form and which is connected by the wires 7, 8, with correlated operating mechanism, such as battery I) and telephone receiver p.

The resonant member 1 is shown connected to the style bar 9 of the talking machine, one end of said bar being connected to a support in the form of a talking machine diaphragm 10, and the other end being connected by suitable means 11 to the style 12.

The clip member 1 is slidingly connected to the style bar 9 and may be said to be slidingly connected to the member 2. This is for convenience of assembling and attaching. The member 1 and bar 9 are friction.- ally held against relative movement so that member 1 moves responsive to operative movement of the bar 9 practically as a sin gle piece therewith and imparts motion to member 2 through coupling 3'which trans lates to member 2 the action of bar 9 and neutralizes the reaction, thus avoiding overvibration so that the movements of bar 9 are translated from member 2 with a dead beat effect, and the bar 9 may oscillate fully relative to the member 2. That is to say,

the oscillations of the style bar 9 are allowed to be full. and complete and Without limitation by an object calculated to terminate the oscillation abruptly. The principle being that the oscillations shall be such as to completely respond to the different length impulses of the diaphragm or stylus. The

member 1 takes up the impulses of the bar 9 and transmits them to the surface of the resilient non-resonant coupler 3 in lines that are in parallelism with parallel traces t, of said surface, and without hindrance to its movement in the direction of said impulses except such control as arises from internal then transmitted to the member 2 at the surface .of the member 2 by the surface of the coupler 3 which contacts with said member 2; and the propagation of the impulse from the coupler 3 to member 2 is in a direction corresponding or parallel to the direction in which the impulse was transmitted to the surface of coupler 3 by the surface of member 1.

It is particularly pointed out in this con-- nection that the relative movement does not produce such an accumulative resistance to theimpelled bar 9 as would result if the inner end of the member 1 were to actagainst the bend of the coupler 3 to compress the coupler at that point. But on the contrary the bar is, as it were, suspended by the side walls of the member 1 and is allowed to move relative to the member 2 under practically the same regulating restraint at every point within the limits of the required movement, thus preventing any shock or jar or any excessive mechanical resistance or any over-vibration arising at any point between the bar 9 and the variable electrical resistance button 6. The broad contacting surfaces are effective to cause the coupler to transmit the motion practically without loss which might arise from local compression of the coupler if the bar 9 contacted directly with the coupler. That is to say, it is desirable to have member 2 move consonant with the bar without mervibration, or motion due to the inertia or to the resiliency of the bar or other moving parts. In other words, the result aimed at is to insure that the member 2 will move in exact consonance with the actuating im-.

pnragm 14. The member 2 ,and the part 3 are analogous to such parts in Fig. l and the member 15 is practically of the same construction as the member 1 in Fig. 1. i

In Figs. 4 and 5 the resonant member 21 corresponds to the member 2 in Figs. 1 and 2 excepting that it is provided with recesses 22 in which a soft rubber coupler formed.

of cylinders 23 is mounted; and the member 1 for holding the pin 24 is inserted between opposed pairs of said cylinders 23 and imparts thereto the impulses of the diaphragm 14 that are transmitted to said pin 24, said impulsesbeing transmitted through said rubber members to the resonant mem ber 21 with dead beat effect.

Inthe form shown in Figs. 6 and 7 the members 31 and 32 are tubes of brass or other resonant material and the coupler 33 is a rubber tube inserted into the outer tube 32 and having the inner resonant tube 31 of brass or the like inserted thereinto. The pin 24 is the same as shown in Figs. 3 and 4. In the form shown in Fig. 8 the style bar 9' is constructed as a reed supported between rubber wash rs 34, 35 compressed by a screw 36, screwe into the support 37 on the talking machine arm. A lateral support 39 is struck out from the style bar 9' 're'ctly intercept, the impulse.

and the resilient non-resonant coupler 40 is cemented thereto and the resonant member 41 is cemented to the top of the coupler 4O andthe variable electrical resistance is attached to said member 41.

The translation of the impulses from the style 12 in Fig. 8 are in the direction of the variable electrical resistances 6 and the traces t are at thesides of a line extending in the direction of the impulse translation. 42 indicates such a line.

A principle of this invention is that impulses, such as those propagated by talking machine style may be translated as waves by transmitting them through a substance which will propagate the wave in its purity without intercepting the same as they might be intercepted by a bumper; and the mechanism through which I have translated such impulses consists of a resonant member adapted to take on the mechanical impulses from the style, a resonant member adapted to propagate impulses of a like nature, and a non-resonant medium or means'between said members; said medium being connected to said members and adapted to transmit impulses from one to the-other by internal distortion along lines at right angles to the direction of the'received original impulses and free from such contact with one or the other or both of said members as would di- That is to say, it is necessary in order to attain the desired result that the interposed medium shall not act as a bumper. It is resilient andelastic so that it may be distorted and.

will return to a predetermined position. In further explanation it is noted that if the interposed medium is arranged to translate impulses directly from the member which recoives the original impulse, or directly to the member to which said impulse is delivered there is an accumulative resistance to the impulse which impairs its mechanical perfection, there thus being produced an irregularity in the translation, while it the impulse is translated only through distortion of the interposed resilient non-resonant -medium, the propagation is in accordance with the laws of wave propagation. By this device the hammering effect is done away with and the transition from wave to wave approximates the true curve of the original impulse.

The non-resonant resilient means or coupler allows said resonant means to have relative oscillation in the direction of the impulse transmission.

In Fig. 9, a transverse record device 43 is shown in magnified form to make it clear that the movement transmitted by the element 9 in Fig. 1 the element 39 in Fig. 8 and the corresponding elements in the other figures is direct toward and from the variable resistance 6. It is apparent that the translation of such direct impulse action through non-resonant means is at right angles to the line of direction of the originating impulses in 9, 39, and like elements in the other views and that the line of direction of the impulses in the second resonant member as 2, 41 etc, is in parallelism with the line of direction of the originating impulses, such movement being produced by distortion of the elastic coupling.

In Fig. 10 the element 44 from which the originating impulses are propagated to the coupler 45 may be regarded either as a style bar or as a diaphragm. The coupler 45 may be regarded as either a rubber ball or a rubber tube fixed by suitable means, as cement, to the element 44 through the medium of the bracket 46, supported by threaded nut and bolt 47 The opposite side of the coupler 45 is cemented or otherwise fixed to a plate 48 that is adjusted by a screw 49 screwin port 50. The varia ale resistances 51 and 52 are connected to the non-resonant coupler 45 by the resonant plates 53 and 54 respectively. It is apparent from Fig. 10 that the impulses by the member 44 toward member 45 will be propagated through the walls of through the fixed supmember 45 in lines normal to the direction of the impulses translated from member 45 to the resistances 6.

In practical. operation atthe origin of each impulse translation there is a period of rest between the movement of the actuating resonant member and the movement of the -actuatedresonant member due to the so effective as the form shown in resiliency of the non-resonant coupler, although each impulse is transmitted through the non-resonant coupler. The major translation of each impulse is through the resilient non-resonant coupler in a direction that is normally transverse to the direction both of the originating impulses and the propagated impulses in the resonant members.

By arranging the contacting, faces between the member 1 and coupler 3 and between the coupler 3 and the member 2 side by side and extending in parallelism in the direction of the impulses of the element 9, 13, or the like, toward the variable resistance 6, so that all may be bisected bya single plane extending at right-angles to the direction of the impulse translation, the propagation of the impulse through the compressed rubber coupler 3 is lateral, or normal to the general direction of the impulses. This diversion of the impulse by the compressed rubber coupler enables the mechanical impulse to be mechanically transmitted with proper value to the variable resistance which is carried by the member 3.

The operation throughout all of the forms is upon the same principle, but it is understood that the form shown in Fig. 8 is not the other views.

' I claim:

coupler between and in contact with said members, one of said members being adapt-- ed to receive impulses and transmit the same to the non-resonant coupler and the other member being adapted to receive impulses from the non-resonant coupler and transmit the same, the contact faces between said members and said coupler being side by side so that all may be bisected by a single plane extending at right angles to the direction of the impulse translation.

2. An impulse translator comprising a resilient non-resonant coupler; a resonant member inserted into and united to said coupler and adapted to receive impulses and to transmit the same to the coupler, a second resonant :member; said coupler being inserted into and united to said second resonant member, the union between said coupler and said members being along faces that are side by side parallel to the direction of the impulses to be translated, so that a single plane extending at right angles to said direction will bisect said faces; said second resonant-member being adapted to'transmit impulses received from said coupler.

3. The combination with an impulse transmitting device, ofa resonant member a nonresonant coupler into which said resonant member is inserted; :a second resonant member into which said non-resonant coupler and the resonant member are inserted, and

an electrical. resistance connected to said second resonant member; the coupler being united to said members along faces that extend side by side parallel to the direction of the impulses to be transmitted.

4. The combination with an impulse transmitting device, of a U-shaped resonant member into which said device is inserted; a nonresonant coupler into which said resonant member is inserted; a resonant member into which said non-resonant coupler is in.- serted and an electrical resistance connected to the second resonant member; said members and said non-resonant coupler being united along faces that extend side by side parallel to the direction of the impulse transmission; so that said faces may be bisected by a single plane extending at right angles to said direction, thus allowing wave propagation through the rubber coupler at right angles to that through either of said members.

5. The means set forth for connecting variable electrical resistance to mechanical impulse transmitting devices, said means comprising members relatively movable in the direction of impulse translation, and a resilient, non-resonant dead beat coupler united to said member along parallel faces that are arranged side by side, suspending one of said members relative to the other and adapted to transmit impulses from one member to the other through distortion of the sides of said coupler without interference due to direct compression of said coupler.

6. Impulse translating means comprising a resonant member, a second resonant member; and a resilient, non-resonant means arranged between and connected to said members through opposite faces of said means; said faces being arranged side by side and being in contact with said members along faces that extend side by side in parallelism with the direction of the impulse translation.

7. In combination with a sound wave impulse transmitting device and a variable electrical resistance, impulse controlling means comprising two relatively movable members, one inclosing the other on opposite sides, and resilient non-resonant deadbeat means arranged between and contacting with the relatively movable members along faces that extend side by side for the purpose of transmitting impulses therebetween so that an impulse from the sound wave impulse transmitting device will be transmitted positively to the variableelcctrical resistance with practically a dead-beat effect.

8. An impulse translator comprising a resonant member, a second resonant member, and resilient non-resonant means compressed between and suspendedby said members; opposite faces of said means extending side by side to contact with said members in parallelism with the direction of the impulse the line of direction of the impulse trans- 10 translation. lation. I

9. An impulse translator comprising two In testimony whereof I have hereunto set resonant members that may be oscillated in my hand at Los Angeles, California, this 6 the1 direlction of the translating movement 23d day of February, 1917.

an resi ient non-resonant means connectin said members and in operative contact witi i V EDWARD AMET' said members only along one or more traces Witness:

extending side by side in parallelism with W. N. KIRKBY. 

